CN217003337U

CN217003337U - Gas safety valve with alarm device

Info

Publication number: CN217003337U
Application number: CN202220223324.1U
Authority: CN
Inventors: 杭容方
Original assignee: China Resources Nanjing Municipal Design Co Ltd
Current assignee: China Resources Nanjing Municipal Design Co Ltd
Priority date: 2022-01-27
Filing date: 2022-01-27
Publication date: 2022-07-19
Anticipated expiration: 2032-01-27

Abstract

The utility model relates to the technical field of gas safety, and discloses a gas safety valve with an alarm device. The gas safety valve comprises a main body and an alarm assembly which are matched with each other, wherein the main body comprises a valve body, a valve rod and a gas guide pipe; the alarm assembly comprises an alarm and a self-reset switch which are connected; the valve body is provided with an exhaust port and an air inlet; the air duct is arranged in the valve body and is tightly connected with the air inlet, and a plurality of air holes are also formed in the wall of the air duct; one end of the valve rod is fittingly arranged in the air guide pipe in a penetrating mode, and the other end of the valve rod movably penetrates through the valve body and is arranged corresponding to the self-reset switch. The utility model better ensures the safety when using the gas system.

Description

Gas safety valve with alarm device

Technical Field

The utility model relates to the technical field of gas safety, in particular to a gas safety valve with an alarm device.

Background

The fuel gas is a general name of gas fuel, is used as a heat energy source, and has important application in the aspects of industry and civilian use.

The gas safety valve is an important part in various gas systems, and plays an important role in ensuring gas safety. When the pressure of the gas system exceeds a target value, the gas safety valve is opened to release the pressure of the gas system, so that the pressure in the gas system is kept stable. The gas safety valve is divided into a spring type safety valve and a rod type safety valve according to the structural principle; the working medium is classified into a sealed safety valve and an open safety valve according to whether the working medium is flammable, explosive or toxic.

However, most of the existing gas safety valves only have a simple pressure relief function, but lack a corresponding warning function. Therefore, when the abnormal pressure of the gas system rises too fast and the corresponding gas safety valve cannot release pressure quickly, the gas safety valve cannot remind related personnel of taking manual emergency pressure release measures and remind nearby personnel of evacuating; especially when the working medium is inflammable and explosive gas or toxic gas which can not be sensed by human sense. Therefore, the existing gas safety valve still cannot completely ensure the safety of using a gas system when the pressure is abnormal.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a gas safety valve with an alarm device, which not only has a pressure relief function, but also can give an alarm in the pressure relief process when the pressure rises abnormally and too fast; to remind personnel to take corresponding emergency measures or risk avoidance measures. Thereby better guaranteeing the safety when using the gas system.

In order to achieve the above purpose, the utility model provides the following technical scheme:

a gas safety valve with an alarm device comprises a main body and an alarm assembly which are matched with each other, wherein the main body comprises a valve body, a valve rod and a gas guide pipe; the alarm assembly comprises an alarm and a self-reset switch which are connected; the valve body is provided with an exhaust port and an air inlet; the air duct is arranged in the valve body and is tightly connected with the air inlet, and a plurality of air holes are also formed in the wall of the air duct; one end of the valve rod is fittingly arranged in the air guide pipe in a penetrating mode, and the other end of the valve rod movably penetrates through the valve body and is arranged corresponding to the self-reset switch.

Further, the length of the air duct is equal to the initial distance between the valve rod and the self-resetting switch; and defining the initial distance as the distance between one end of the valve rod close to the self-reset switch and the self-reset switch when the main body is in a closed state.

Further, the alarm assembly comprises a shell, and the shell is of a sealing structure; the self-reset switch and one end of the valve rod matched with the self-reset switch are arranged in the shell, and the alarm is arranged outside the shell.

Furthermore, the alarm assembly comprises a guide piece, and the guide piece is arranged in the shell and comprises a fixing plate and a guide post; the guide post is axially arranged along the valve rod, and two ends of the guide post are fixed with the shell; the fixing plate is movably sleeved on the guide post and is fixedly connected with one end, close to the self-reset switch, of the valve rod.

Furthermore, an elastic piece is sleeved on the valve rod.

Furthermore, the main body comprises a valve sleeve, the valve sleeve is arranged on the valve body, and one end of the valve rod, which corresponds to the self-reset switch, movably penetrates through the valve sleeve.

Further, the main body comprises a valve core, and the valve core is arranged in the air guide pipe and connected with one end of the valve rod; and the cross section area of the valve core is larger than that of the valve rod.

Furthermore, the main body comprises a diffusion ring, and the diffusion ring is arranged in the valve body and is connected with the vacant end of the air duct; and the area of the end face of one end of the diffusion ring connected with the air guide pipe is smaller than that of the other end of the diffusion ring.

Furthermore, the joint of the diffusion ring and the air duct is of an arc-shaped structure.

Furthermore, the alarm is an audible and visual alarm.

Has the advantages that:

according to the technical scheme, the existing gas safety valve is improved. The gas safety valve not only comprises a main body for realizing the pressure relief effect, but also comprises an alarm component with the alarm effect. The main body comprises a valve body, an air inlet, an air outlet, a valve rod and an air guide pipe; the alarm assembly comprises an alarm and a self-reset switch. In the specific structure, on one hand, the air duct is connected with the air inlet, one end of the valve rod is arranged to penetrate through the air duct in a matching mode, and the other end of the valve rod is arranged opposite to the self-reset switch of the alarm component. On the other hand, a plurality of air holes are arranged on the air duct. When the pressure of a gas system is abnormal, medium gas enters the gas inlet and the gas guide pipe in sequence, if the pressure is abnormal and the abnormal condition is light, the abnormal rise is slow, the flowing speed of the medium gas is slow at the moment, the pressure effect on the valve rod is small, and therefore the medium gas enables the valve rod to be partially jacked up, discharged from the gas hole and finally discharged from the gas outlet. If the pressure abnormal condition is serious and the abnormal rise is fast, the flowing speed of the medium fuel gas is fast at the moment, and the pressure effect on the valve rod is large, so that the medium fuel gas enables the valve rod to be completely jacked up, the valve rod presses the self-reset switch, and the alarm is triggered to give an alarm to remind personnel to take corresponding measures to assist in carrying out quick pressure relief and other safety measures.

It can be seen from the above that the safety valve of the present invention improves the existing structure, so that it can generate different responses to different degrees of abnormal conditions. The gas guide pipe and the corresponding gas hole are arranged, so that the pressure relief of the main body can be realized through the self pressure relief effect when the abnormal pressure condition of the gas system is lighter, and the safe operation of the gas system is ensured; through the valve rod with from reset switch's interact, it can remind personnel to take manual measure supplementary when the gas system pressure abnormal conditions is serious in the pressure release to prevent the emergence of incident.

It should be understood that all combinations of the foregoing concepts and additional concepts described in greater detail below can be considered as part of the inventive subject matter of the present disclosure unless such concepts are mutually inconsistent.

The foregoing and other aspects, embodiments and features of the present teachings can be more fully understood from the following description taken in conjunction with the accompanying drawings. Additional aspects of the present invention, such as features and/or advantages of exemplary embodiments, will be apparent from the description which follows, or may be learned by practice of specific embodiments in accordance with the teachings of the present invention.

Drawings

The drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component that is illustrated in various figures may be represented by a like numeral. For purposes of clarity, not every component may be labeled in every drawing. Embodiments of various aspects of the present invention will now be described, by way of example, with reference to the accompanying drawings, in which:

fig. 1 is a schematic view of a gas safety valve with an alarm device according to the present invention.

In the figure, the reference mark 1 is a valve body, 2 is an air duct, 3 is a valve rod, 4 is a valve core, 5 is a diffusion ring, 6 is a shell, 7 is an alarm, 8 is a self-resetting switch, 9 is a guide post and 10 is a fixing plate; reference numeral 11 denotes an air inlet, 12 denotes an air outlet, 13 denotes a valve housing, 21 denotes an air hole, and 31 denotes an elastic member.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the utility model without any inventive step, are within the scope of protection of the utility model. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs.

The use of "first," "second," and similar terms in the description and claims of the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Similarly, the singular forms "a," "an," and "the" do not denote a limitation of quantity, but rather denote the presence of at least one, unless the context clearly dictates otherwise. The terms "comprises" or "comprising," and the like, mean that the elements or components listed in the preceding list of elements or components include the features, integers, steps, operations, elements and/or components listed in the following list of elements or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and/or groups thereof. "upper", "lower", "left", "right", and the like are used only to indicate relative positional relationships, and when the absolute position of the object to be described is changed, the relative positional relationships may also be changed accordingly.

The utility model provides a gas safety valve with an alarm device. On one hand, the gas safety valve is provided with a plurality of air holes on the gas guide pipe so as to release pressure when the pressure is abnormally light; on the other hand, the air duct is arranged to be connected with the air inlet, one end of the valve rod is arranged to be matched and arranged in the air duct, the other end of the valve rod is arranged opposite to the self-reset switch of the alarm component, so that pressure relief is carried out when pressure is abnormal and serious, and meanwhile, an alarm is given out to remind personnel to take manual auxiliary measures. Therefore, the gas safety valve can ensure the safe operation of the gas system under any condition.

The gas safety valve with the alarm device disclosed by the utility model is further specifically described below with reference to the embodiment shown in the attached drawings.

As shown in fig. 1, the safety valve includes a main body and an alarm assembly which are engaged with each other. The main part is used for carrying out the pressure release, the warning subassembly is used for reporting to the police when gas system is unusual serious. Based on this, the main body is provided with a valve body 1, a valve rod 3 and an air duct 2; the alarm component comprises an alarm 7 and a self-reset switch 8 which are connected. In a specific structure, the valve body 1 is provided with an exhaust port 12 and an air inlet 11, wherein the exhaust port 12 is connected with an external exhaust system through an exhaust pipe, and the air inlet 11 is connected with a gas system through an air inlet pipe. The air duct 2 is arranged in the valve body 1 and is tightly connected with the air inlet 11, and a plurality of air holes 21 are further arranged on the wall of the air duct 2. One end of the valve rod 3 is fittingly arranged in the air duct 2 in a penetrating manner, and the other end movably penetrates through the valve body 1 and is arranged corresponding to the self-reset switch 8.

In a specific implementation, when the pressure of the gas system is abnormal, the medium gas will enter the gas inlet 11 and the gas guide tube 2 in sequence, if the pressure abnormality is light, the abnormal rise is slow, at this time, the flowing speed of the medium gas is slow, and the pressure effect generated on the valve rod 3 is small, so that the medium gas will make the valve rod 3 be partially jacked up, and be discharged from the gas hole 21, and finally be discharged from the gas outlet 12. If the pressure is abnormal seriously and rises abnormally fast, the medium gas has high flowing speed and large pressure effect on the valve rod 3, so that the medium gas enables the valve rod 3 to be completely jacked up, the valve rod 3 presses the self-reset switch 8, and the alarm 7 is triggered to alarm so as to remind personnel to take corresponding measures to assist in rapid pressure relief and other safety measures.

Therefore, the gas safety valve can generate different responses aiming at abnormal conditions of different degrees, so that the safe operation of a gas system is ensured, and related safety accidents are prevented.

When the abnormal condition of the gas system is serious, in order to enable the valve rod 3 to smoothly press the self-reset switch 8, the valve rod 3 can be prevented from being separated from the limit of the gas guide pipe 2, and the pressure relief speed of the safety valve per se is increased; the length of the air duct 2 is set to be equal to the initial distance between the valve rod 3 and the self-reset switch 8. The initial distance is defined as the distance between one end of the valve rod 3 close to the self-reset switch and the self-reset switch 8 when the main body is in a closed state. At this time, the self-reset switch 8 can be smoothly pressed when the valve rod 3 is completely pushed open; and the valve rod 3 and the vacant end of the air duct 2 are in micro-contact, and the valve body 1 is used for limiting the other end of the valve rod 3, so that the valve rod 3 and the air duct 2 can be effectively prevented from being staggered, and further the subsequent use is influenced. Simultaneously, because the valve rod 3 is in little contact state with the vacant end of air duct 2, consequently the medium gas also can be followed this clearance and discharged to increase the pressure release speed, improve the security.

In order to further increase the pressure relief speed of the gas safety valve when the abnormal condition is serious, the main body comprises a diffusion ring 5, and the diffusion ring 5 is arranged in the valve body 1 and connected with the spare end of the gas guide pipe 2. And the area of the end surface of one end of the diffusion ring 5 connected with the air duct 2 is smaller than that of the end surface of the other end.

And in order to prevent the joint of the diffusion ring 5 and the gas guide pipe 2 from rubbing when the valve rod 3 is completely jacked up, thereby affecting the sealing performance of the gas guide pipe when a gas system operates normally, and introducing impurities to pollute the pipeline and the valve body 1, the joint of the diffusion ring 5 and the gas guide pipe 2 is arranged to be in an arc-shaped structure.

In order to have a strong pressure relief effect in any case, the gas safety valve is provided with the main body comprising a valve core 4. The valve core 4 is arranged in the air duct 2 and connected with the valve rod 3, and the cross section area of the valve core 4 is larger than that of the valve rod 3. At this time, on one hand, the valve core 4 plays a sealing role on the gas inlet 11 to prevent gas leakage when the gas system normally operates; on the other hand, the air duct 2 has a larger pipe diameter, so that the air duct can have a larger air inlet amount when the valve rod 3 is fully or partially jacked.

In order to allow the valve rod 3 to be quickly reset to seal the gas system when the pressure abnormality is resolved, an elastic member 31 is fitted over the valve rod 3. The elastic member 31 serves to increase the speed of return of the valve stem 3 and to increase the sealability thereof. In this embodiment, the elastic chamber 31 is specifically a spring.

In order to prevent the valve body 1 from leaking at the point where the valve stem 3 passes through, it is provided that the body comprises a valve sleeve 13. One end of the valve rod 3, which is arranged corresponding to the self-reset switch 8, movably penetrates through the valve sleeve 13.

In order to increase the service life of the alarm assembly, it is provided that it further comprises a housing 6. The shell 6 is a sealing structure; the self-reset switch 8 and one end of the valve rod 3 matched with the self-reset switch are both arranged in the shell 6, and the alarm 7 is arranged outside the shell 6.

In order to improve the accuracy when the valve rod 3 is matched and pressed with the self-resetting switch 8, the alarm assembly further comprises a guide piece. The guide piece is arranged in the shell 6 and comprises a fixing plate 10 and a guide post 9. The guide post 9 is arranged along the axial direction of the valve rod 3, and two ends of the guide post are fixed with the shell 6; the fixing plate 10 is movably sleeved on the guide post 9 and is fixedly connected with one end of the valve rod close to the self-reset switch.

In this embodiment, the alarm 7 is an audible and visual alarm.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the utility model. Therefore, the protection scope of the present invention should be defined by the appended claims.

Claims

1. A gas safety valve with an alarm device is characterized by comprising a main body and an alarm assembly which are matched with each other, wherein the main body comprises a valve body, a valve rod and a gas guide pipe; the alarm assembly comprises an alarm and a self-reset switch which are connected; the valve body is provided with an exhaust port and an air inlet; the air duct is arranged in the valve body and is tightly connected with the air inlet, and a plurality of air holes are also formed in the wall of the air duct; one end of the valve rod is fittingly arranged in the air guide pipe in a penetrating mode, and the other end of the valve rod movably penetrates through the valve body and is arranged corresponding to the self-reset switch.

2. The gas safety valve with alarm device of claim 1, wherein the length of the gas-guide tube is equal to the initial distance between the valve stem and the self-resetting switch; and defining the initial distance as the distance between one end of the valve rod close to the self-reset switch and the self-reset switch when the main body is in a closed state.

3. The gas safety valve with alarm device of claim 1, wherein said alarm assembly includes a housing, said housing being a sealed structure; the self-reset switch and one end of the valve rod matched with the self-reset switch are arranged in the shell, and the alarm is arranged outside the shell.

4. The gas safety valve with alarm device of claim 3, wherein the alarm assembly comprises a guiding member, the guiding member is arranged in the housing and comprises a fixing plate, a guide post; the guide post is arranged along the axial direction of the valve rod, and two ends of the guide post are fixed with the shell; the fixing plate is movably sleeved on the guide post and is fixedly connected with one end, close to the self-reset switch, of the valve rod.

5. The gas safety valve with alarm device of claim 1, wherein said valve stem is sleeved with an elastic member.

6. A gas safety valve with alarm device as in claim 1, wherein said main body includes a valve housing, said valve housing being disposed on said valve body, an end of said valve stem disposed in correspondence with said self-reset switch being movable through said valve housing.

7. The gas safety valve with alarm device of claim 1, wherein said main body includes a valve core, said valve core is disposed in said gas conduit and connected to one end of said valve stem; and the cross section area of the valve core is larger than that of the valve rod.

8. The gas safety valve with alarm device of claim 1, wherein said body includes a diffuser ring disposed in the valve body and connected to the free end of said gas-guide tube; and the area of the end face of one end of the diffusion ring connected with the air guide pipe is smaller than that of the end face of the other end of the diffusion ring.

9. The gas safety valve with alarm device of claim 8, wherein the connection between said diffuser ring and said gas-guiding tube is an arc-shaped structure.

10. The gas safety valve with alarm device of claim 1, wherein the alarm is a sound and light alarm.